problem with Parse error: syntax error, unexpected T_GLOBAL

Hi! I'm absolutely newbie here ,,..and I need some help to upload my ready website on the web server. I completed my website on my computer , and now im trying to upload it to my web server. I created database, and copied all files into folder.
I also changed my database name and other options which were different on the live server in _config.php
but now when I'm trying to connect with my website I'm getting this message:
Parse error: syntax error, unexpected T_GLOBAL in /home/naszemiasto/ftp/polishculturalweek3/mysite/_config.php on line 7

// Sites running on the following servers will be
// run in development mode. See
// http://doc.silverstripe.com/doku.php?id=devmode
// for a description of what dev mode does.
Director::set_dev_servers(array(
'localhost',
'127.0.0.1',
));